Feed-change arrangement.



S. EINSTEIN.

FEED CHANGE ARRANGEMENT.

APPLIGATION FILED JUNE 5,1914.

1, 1 20,650. Patented Dec; 8, 1914.

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FEED CHANGE ARRANGEMENT.

APPLICATION FILED JUNE 5, 1914.

1, 1 20,650. Patented Dec. 8, 1914.

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FEED CHANGE ARRANGEMENT.

APPLICATION FILED JUNE 5, 1914.

1,1 20,650. Patented Dec. 8, 1914 5 SHEETS-SHEET 3.

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S. EINSTEIN.

FEED CHANGE ARRANGEMENT.

APPLICATION TILED JUNE 5, 1914.

1, 1 20,65@. Patented Dec. 8, 1914;

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S. EINSTEIN.

EEED CHANGE ARRANGEMENT.

APPLICATION FILED JUNE 5,1914.

Patented Dec. 8, 1914.

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Urn vented 506 m UNITED STATES PATENT OFFICE. j

SOL EINsTnnv, or CINCINNATI, OHIO, AssIenon To THE CINCINNATI MILLING MACHINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION or oHIo.

FEED-CHANGE ARRANGEMENT.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed June 5, 1914. Serial No. 843,218.

To all whom it may concern Be it known that 1, S013 EINSTEIN, a c1t1- zen of the United States, and residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new. and Improved Feed-Change Arrangement, of which the following specification is a full disclosure.

This invention proposes an improved machine-tool organization and it deals with a simplification of the general arrangementof conventional machines as well as of variou sub-combinations thereof.

The ultimate usefulness and efiiciencyof a machine-tool necessarily is very intimately related to the facility and convenience with which it may be manipulated by the attendant. One of the most important of the various hand controllers has heretofore been placed beyond the immediate reach of the attendant when stationed at the point best adapted for the observance of the progress of the work, and this awkward position was resorted to in order to reconcile certain difficulties thought otherwise to arise. That is to say, in the knee-and-column type of machine, the feed-change mechanism for determining the rate at which the table will be caused to feed during a tooling operation has in whole or in essential part heretofore been positioned on a stationary frameunit at a point remote from the table; as for instance, closely adjacent the rimemover or driving-pulley and on the rameunit that supports said driving-pulley. The hand-levers for manipulating this feedchange mechanism have also been mounted immediately at said mechanism and invariably the table has intervened between such hand-levers and the station of full observation,,so that the attendant has been required to leave his station of observation in order to change the rate of feed of the table. -The motion has alsobeen transmitted from this mechanism to the table by means of a series of concatenated elements, which have had to be designed to run at the varying rates determined by the feed-change mechanism, and

the path of travel of the table, and preferably.

also housed by a casing or box mounted on a frame-unit so as to project from the side thereof that extends upwardly transversely to the path ofthe table and facing the observation station of the attendant; and with one or more control levers mounted on that side of the box and within the immediate reach of the attendant, whereby he will be enabled to govern the rate of feed of the table without shifting his position.

Another object within the contemplation of this invention is to simplify the construction of the feed-change mechanism so that the attendant may cause the table to feed in the predetermined direction at any desired one of a multiplicity of available rates by the manipulation of a single lever or hand controller; or may either stop or reverse the direction of travel of the table by manually shifting another lever; or may cause the stopping or the reversal, or both to take place automatically by dog-action.

Another object of the preferred species of this invention is to effect a rearrangement of conventional machines whereby the entire feed-change mechanism as well as the handlevers for operating the same will be mounted on or'carried by one or more of the floating frame-units, i. e., such as are mounted to permit of being moved bodily in a vertical direction and cause the distance to be varied between the tool-carrying member and the table, as for instance, the knee or saddle of a machine of the type illustrated.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the features of construction, combination of parts and in the unique relations of the and disposition thereof; all as more'completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the views, of which members and in the relative proportioning Figure 1' is a side elevation of a milling machine ofthe lmeeand-column type typi fying'the manner inwhich anygiven type maybe reorganized to embody this invention. Fig. 2 is a diagrammatic drawing analyzing a gear arrangement such as may be, used forefl'ecting a change in the feed ofthe table {the various gears being brought into one plane to avoid the confusion of an ordinary drawing. Fig. 3 is a schematic drawing explaining how 'asingle hand-conxtro'ller may execute the various manipulations required for effecting twelve changes of lfeed, another one determining the direc tion of travel of the table at any one of these rates (to the right or to-the left), as well as. for stopping the trave at any time.

4 'isa: development in lan of the circumference of-a cam element forgiving the time 2'0 and nature of the action of a shift lever or levers, operating in conjunction with the single hSQIId-COIitIOllBIz Fig. 5 is a development' in plan of. the circumference of the single-hand-controller and exemplifying the schedule and nature of the means thereon contained for enabling the attendant at once to perceive the efi'ect of his manipulationz Fig. 6 is a development in plan of a' -speed'change mechanism intervening be- 33 tween the prime-mover and the spindle. Fig. 7 isa front elevation of a machine tool, a. e.,-an elevation as seen' from the attendants station. Fig. 8 is an enlarged side view of a means for stopping or reversing azi'the motion, either manually or automatically.- Fig. 9 is a horizontal section through line 9-9 of Fig. 8.

'To'obtain an adequate understanding of this invention, it should be keptin mind 4'2) that the term feed, as used herein, indicates any one of a series relatively slow movements of the table 'afiessentially suit able for tooling operations, and the term feed-changer or feed-change mechanism indicates only that particular device whichdetermines the rate at which the table thus feeds and it is to be' distinguished from variable speed devices which affect changes 'not all identified with a" tooling-operation, as well as from the speed-change mechanism herein referred to and which determines the speed of rotation of the cuttemspihdle. Before detailing the specific features of '55 construction whereby these functions are attained; it' will be convenient first to describe-certain major elements ofaconventional --'iI'1illing machine. These comprise a table Y .that'supportsth'e work and which 'is reciprocated 'to-and-fro' to subject the 'work bolted thereonto the effect of the tool or cutter thatis secured to an ap ropriate tool-supporting member here typified by a spindle X which,'in this instance, is continuously rotated by power derived from Fig.

chine properly to execute its functions, these actuated elements must be capable of being brought into adjustable relation with one another in two. directions. This is accomplished by an interponent frame-unit B that intervenes between the frame-unit A that directly supports the spindle or tool-supporting member and the frame-unit C that directly mounts the table. In the type of machine illustrated, the interponent frameunit B is'commonly termed a knee the table-supporting frame-unit C is usually termeda saddle, and the spindle mounting frame-unit A is generally termed a column.

The chief mechanical characteristic of the interponent frame-unit B is that it provides for a relative vertical adjustment as to the spindle-mounting unit, and a horizontal adjustment as to the table-supporting unit, 71. e., in a direction transverse to the other.

' The spindle-mounting frame-unit, or column A, has heretofore been that also selected to rest on the floor and thus provide a foundation for the machine, as a whole, andit has also been utilized to support or mount both the change-gear mechanism that varies the speed of the spindle, as well as the changegear mechanism that varies the rate of feed of the table. This, however, has resulted in a very considerable inconvenience. to the attendant in manipulating the machine. That is to say, the attendant must be stationed, at the outer longitudinal side of the reciprocating table inorder to scrutinize the action of the machine, but, when so stationed, he is out of reach of the levers that effect all the changes of the rate of feed of the table, so that, in order to makethese changes he must shift his position.

This invention proposes, among other things, a rearrangement and a reconstruction of the control elements so as to free the so-called column of the machine from' the mechanism that governs the rate at which the table shall feed, and so to locate the said mechanism, and so to combine it with-other control features that the attend-' ant, when stationed at the outer longitudi-' i. 6., to vary its speed during a cuttingstroke; second, to change the direction of travel of the table, either manually or automatically; and third, to stop the movement of the table either manually or automatically. In carrying out this aspect of this invention, one ofthe frame-units carrying the weight of the table may assume any conventional proportions or configuration, such as are indicated on the drawings, but with this distinction, that it is contrived also to support or carry the weight of what mayzbe termed a feed-change box, 71. e.,-the casing and elements constituting a change-gear mechanism such that the rate of feed may be varied at will. This box may also include other control features, such as the means for determining the direction of the pulley P is mounted, may carry a number of gears 6 e and e which (see Fig. 6 are here slidablc as a unit on shaft p (through the hand shifting means 6) so that any single one of them may be meshed with the appropriate one of the gears E E E respectively, so as to impart a predetermined rate of rotation to the gears E and E A selector carrying gears Q31 and m is operated by the hand-shiftingmeans a" (see Fig. 1) so that the gear @21 may be rotated at a series of different speeds and effect a corresponding rotation of the spindle X through the gear X Another transmission line derives motion from the primemover and consists of the train of gears 1, 2 and 3 in intermeshing relation, and the universal and extensible shaft 4: that is connected to the universal joint 5 secured to a power-driven shaft 6 that is journaled in the frame-unit 0 between the front and rear side walls thereof, or of a boX or casin C forming a part of the frame-unit Pinned to this shaft 6 is a gear 7 that meshes with a gear 8 which turns the shaft f journaled also in the front and rear side walls of the feed-change box C.

This transmission may be regarded as an intervening or trunk line transmission, and as forming a part of the entire train leading from the prime-mover to the table.

Splined to the shaft f are two shiftable units f and F, the one supporting gears f and f and the other carrying gears f and 7'. These units arershiftable for the purpose of utilizing any one of the four enumerated gears for transmitting motion to the table, and the means for accomplishing this shift will be detailed subsequently. A series of gears F F F, F FZF are journaled to rotate as a unit and are located in such relation with the aforesaid four gears that gear f may be intermeshed with gear F or gear f with gear F or gear i with gear F or gear f with gear F, withthe efi'ect that gears F F and F may be caused to rotate at any one of four different speeds. .-M'eans is also provided whereby any. one ofthese three gears (which are of different sizes) may be utilized to transmit the motion so that twelve different changes may ultimately be had. The means for doing this comprises a shaft 9 to which is splined a shiftable memberg, which in the position shown by Fig. 2 operatively cons nects gear F 3 through gearg with the shaft g. NVhen shifted to the left this member 9* likewise connects gear F through gear g with the shaft 9 and similarly when the member 9* is shifted to the right it connects gear F through gear 9 with the shaft All rotations of the shaft 9 are communicated to the gear 9 and the latter opermanently meshes-withthe gear G so as to drive the bevel G These gears constitute thetransmission portions of a feed-change mechanism and they are journaled in a depending portion of the'frame-unit C, which portion preferably assumes the form of a box or casing C which moves as aunit with the floating frame-unit C, and'which in this embodiment of this invention constitutes the saddle of the machine.

The continuous rotation of the bevel G is appropriately transmitted to a table propelling means capable of converting the continuous rotary motion into a reciprocating rectangular motion suitable for the actuation of the table. This may be accomplished by means of a bevel 9 that meshes with bevel G and which is secured to a shaft 10 that uprises from the box C and carries an upper bevel 11 which meshes with the two gears R and L journaledin the frame-unit on which the table Y slides. A shaft 13 is in loose co-axial relation with these two. bevels, but may be rotated by either through the clutch member H, which is splined to the sleeve 12 that is in turn also splined to the shaft 13. When the clutch H is shifted into interlocking engagement with the bevel L, the shaft 13 will be rotated to move the table to the left, and conversely the table will be moved to the right when clutch H interlocks with bevel R.- This mechanism constitutes a motion-reverser and it is located between the feed-change mechanism and the table. The table propelling means may merely consist of screw-threads on the shaft 13 that engage with a nut 14; appropriately mounted on the table-supporting member, and one or more collars, such as 15, s'o'that when the shaft 13 is rotated, the nut 14 will cause it to reciprocate and thus motion will be communicated to the table Y through the collars or shoulders 15. The

motion-reverser comprising the clutch H may be actuated either by hand or automatically by dog action to change the direction of travel'of the table, or to stop the same by bringing it to the position shown in Fig. 2. By examining the drawings it Wlll be seen that the speed-change mechanism pro-' series yiel s three speeds F, F and F Re- .although its position depends upon" the exact displacement of the element K. The' il-part L. is utilized to determine'how the first ferring to the chart shownby Fig. 5, it will be seen that when the motion flows through the gear F there will be made available a series of speeds, which may be represented by the characters 1, 2, 3 and 4:; but when the motion flows through gear F a multiplier will be introduced into this series yielding a second series of higher values, which is represented on the'chart by the characters 5, 6, 7 and 8, and in like manner when the motion flows through the gear F a third series becomes available, indicated by 9, 10, 11 and 12 on: the chart. The instrumentality'whereby all these twelve speeds become selectively available by the manipulaion; of a-"- single element will now be descri ed.

The single hand-operated element is indicated by K and it embodies a hand-wheel 16' having the char't shown by '5' laid out on its periphery in such a way as to co-act with a pointer 17 shown best by Fig. 1. This element K is so mountedin the box C that the hand wheel may be rotated to cause the pointer to travel progressively throughout the first series 1, 2,3 and 4; and its mounting is such that it may be shifted or displaced axially to bring the pointer into registry with the second series 5, 6, 7 and 8, or with the third series 9, 10, 11 and 12. Intervening between this element K and the series of gears is an interpreting mechanism which will cause the successive gears f f f and 7" to be brought into driving relation with gear F according to the angular displacement-of the element K, or similarly with the gear F when the element K is displaced 'axi'ally into its appropriate position. This interpreting mechanism embodies a part L whichf-issplined axially to the element K so that it is unaffected by an axial movement of said element K, but its angular position corresponds always with the angular position of the element K, and the interpreting mechanism also embodies another part- M which is conversely related to the element.K, e. g.,'by being circumferentially splined thereto so. that it is unaffected by the angular movement of the element I K,

gear-series shall be intermeshed; and the part M determines how the second or multi-- plier .gear series is to be intermeshed or related'to the'first series .Thespart 111s here instanced in the form of a sleeve, which by means of the feather 21, is splined axially to the shaft 18 of the element K thereby permitting free axial movement of the shaft 18 while being constrained to be rotated positively by said Y shaft. This part L provides two e'am grooves position by reason of the straight portion L of the cam lying axially opposite L Now, by turning the hand-wheel 16 to bring the pointer 17 into registry with anyone 16f the numerals 2, 6 or 10, the portion L ofcam'L will cause gear 7 to mesh with geanF the ear-unit 7" still being in neutral position. he next turnof the hand-Wheel 16 will bring the pointer 17 opposite one of the Y membered that gears F F F F*, F and F all move as 'a unit.

The means whereby the three diflerent series of speeds indicated on the chart will now be described. Y

The shaft 18 is provided with a number of circumferential feathers or splines 22, and the part M is brought in splined relation with the element K by means of these feathers in this instance, through the interponent part 23 which assumes the form of a spur-rod or pinion-rod, meshing on the one hand with the feathers 22 and on the other hand with teeth 24 of the part M." From this it will be seen that when the element K 'is shifted in an axial direction the element M will turn about its pivot 25, and its frame 9 will shift the gear-unit g toestablish a propelling or a transmitting relation-- fiom as will be understood from the drawings.

- The means for controlling the position of the clutch-member H or so-called motionreverser, comprises a rock-shaft N (see Fig. 9) which is ournaled in the table-support and is suitably connected as by means of the ofiset pin 28 with the clutch-member H so" .130]

that when it lies in its intermediate position,

the clutch-member Will be in neutral position, and so that when it is rocked one way or the other, the clutch-member H be correspondingly shifted either to engage the bevel R or the bevel L, as the case may be, and thereby appropriately control the direction of travel of the table. This rock-shaft N is maintained in one of these three positions by means of a pawl 26 which is urged by the spring 27 into seating relation with one of the three notches provided by the rockshaft. The hand-lever 0 provides for a manual manipulation of the rock-shaft from a station at the front longitudinal edge of the table. The motion-reverser H is also automatically controlled-through the rockshaft N by means of a dog-actuated plunger T which is also mounted near the front longitudinal edge of the table. This plunger provides a series of circumferential threads 29 that engage with teeth 30 on the rockshaft so that the angular positions of the rock-shaft will depend upon the vertical displacement of the plunger. This displacement is determined by means of the cams 31 and 32 provided on its end. WVhen a dog such as U rides past the plunger, its cam 33 will impact the cam 32 and depress the plunger, and when a conversely formed dog rides by it will impact the cam 32 and elevate the plunger; thereby imparting a travel of the table to the right or to the left, as the case may be. When a'double-cammed dog, such as W, rides past the plunger, its contact surfaces 34 and 35 will coact with the cams 31 and 32 and bring the plunger to neutral position and stop the travel.

Having thus revealed this invention, I claim as new and desire to secure the following combinations of elements, or equivalents thereof, by Letters Patent of the United States l. A machine-tool organization combining a shiftable frame-unit mounted to be capable of a bodily vertical movement and providing a first slide-Way and also providing a second slide-way disposed transversely to said first slide-way; a feed-change mechanism carried by said shiftable frame-unit and located at one end of said first slideway; a table; means supporting said table and cooperating with said first slide-Way to feed in the direction thereof and over said feed change mechanism; another frame-unit cooperating with said second slide-way; a tool-supporting member; means for mounting said tool-supporting member on said other frame-unit; hand-operating means carried by said bodily-movable frame-unit for manually controlling said feed change mechanism; and a transmission extending through said feed-change mechanism for propellin the table at the rate of feed determined iereby.

2. A machine-tool of the nature disclosed combining a stationary frame-unit; a bodily-mgivable frame-unit; a table slidable on said bodily-movable frame-unit; a feedscrew journaled on and reciprocating with said table; a feed-change mechanism carried by said movable frame-unit near one side -'of said stationary frame-unit and underneath said table; operating instrumentalities extending from said feedchange mechanism and located at the front side of the longitudinal edge of said table; and automatic trip means adjustably mounted at the longitudinal edge of said table and adapted to actuate said instrumentalities.

3. A machine-tool organization combining a stationary frame-unit; a tool-supporting member mounted at the upper end thereof; a table; a'bodily-movable frameunit intervening between the table and the stationary frame-unit and providing for relative movements between said frame-unit and said table in two horizontal transverse directions; a feed-change mechanism ar ranged below said table on said bodily-movable frame-unit' and adapted to efiect a relative feed between said table and said toolsupporting member in one of said directions; and a manually operable element arranged at the front of the machine-tool and constituting means for controlling said feed-change mechanism, whereby the rate of relative feed between the tool-supporting member and said table may be varied.

i. A machine-tool organization combining a prime-mover; a table; a frame-unit uprising across the plane of the table; a tool-supporting member located above the table and having its weight carried by said frame-unit; a feed-change mechanism; transmitting means connecting said primemover, said feed-change mechanism and said table; a hand-lever located adjacent the longitudinal edge of the table remote from the said frame-unit; and means enabling said hand-lever to determine the operative effect of said feed-change mechanism.

5. A machine-tool organization combining a tool-supporting member; a table; a stationary frame-unit on which said member is mounted; a first bodily-movable frame-unit slidably supported by said stationary frame-unit whereby the distance between said tool-supporting member and said table may be varied; means comprising a second bodily-movable frame-unit intervening between said table and said first bodily-movable frame-unit and constructed to provide for a relative movement in two transverse horizontal directions between said table and said first bodily-movable frame-unit; a feed-change mechanism mounted directly on said second-bodily mechanism; and means mounted at the side of said last-mentioned frame-unit v for manually adjusting said feed-change mechanism.

6. A machine-tool organization combining a prime-mover; a table; a stationary frame-unit u rising across the lane of the table; a too supporting mem er located above the table and having. its weight carried by said frame-unit; a vertically-movable frame-unit having its Weight carried by said stationary frame-unit; a feedchange mechanism; transmitting means connecting said prime-mover, said feedchange mechanism and said table; a handlever located adjacent the longitudinal edge of the table remote from the said stationary frame-unit; and means enabling said hand-lever to determine the operative efiect' of said feed-change mechanism.

7.fA-machine-tool organization combining a spindle-supporting member; a spindle in journaled relation with said member; a movable table having-a slide-way in its bottom-face a movable frame-unit supporting the weight of said table; a stationary frameunit constituting a foundation for the machine-tool and adjustably supporting the weight of said movable parts; a feed-change mechanism carried by one of said movable parts; a table-propelling transmission extending through. said feed-change mechanism to said table to effect a relative feed of said table at a rate determined by said feed-change mechanism; and a manuallyoperable element mounted on said movable frame-unit and accessible from .a station immediately adjacent the front longitudinal edge of said table and constituting means for controlling said feed-change mechanism, whereby the rate of relative feed between the spindle and the table may be varied.

8. A machine-tool organization combining a prime-mover; a table; a stationary frameunit uprising across the plane of the table; a tool-supporting member located above the table and having its weight carried by said frameunit; a mobile frame-unitcarried by said stationary frame-unit; asecond mobile frame unit carried by the other mobile frame-unit; a feed-change, mechanism; transmitting means connecting;- said primemover, said feed-change mechariismand said table; a hand-lever mounted on said second mobile frame-unit and located adjacent the longitudinal edge of the table remote from the said frame-unit; and means enabling feed in a direction transverse to said second slide-way; another frame-unit cooperating with said second slide-Way; atool-supporting member; hand-operating meansmounted adjacent said tableifor manually controlling said feed-change mechanism; and a transmission extending through said feedchange mechanism for. propelling the table at the rate of feed determined thereby.

10. A machine-tool of thenature disclosed combining a first frame-unit; a prime-mover mounted thereon; a second frame-unit slidable with relation to said first frame-unit; a power driven transmission extending from said prime-mover and terminating at one side of said second frame-unit; a table in slidable relation with said second .frameimit; a feed-screw j ournaled on and recipro-. c'ating with said table; a feed-change box mounted at the said side of said frame-unit underneath said table and establishing connection-between said transmission and feedscrew; and hand-operatinginstrumentalities extending from said feed-change box I and located at the front" side of the longitudinal edge of said table.

11. A machine-tool organization combin-- ing a spindle-supporting member; a spindle in journaled relation with 'said member; a

table; means intervening ,between'the table and the spindle-supporting member and providing for relative movement between said spindle and table in a vertical and in a horizontal direction transverse to the spindle; a casing mounted on said means at one side of the machine-tool and belowsaid table; a feed-change mechanism housed by said casing and adapted to effect a relative feed between said table and said spindle in one of said directions; and a manually operable element arranged at the front longitudinal edge of said table and const-i- I toting means for controlling said feedchange mechanism, whereby the rate of relative feed between the spindle and table may be varied. I

12. A machine-tool of the nature disclosed combining a frame-unit; a casing secured to the front side thereof; a power-driven shaft extending through the rear wall of said casing and terminating in a journal mounted on the front wall thereof; a table slidable transversely on the frame-unit; a feed-screw journaled on and reciprocating with said table; a feed-change mechanism in said casing establishing operative connectlon therebetween; and hand-operating instrumentality journaled at the outer side of the front wall of said casing and located forward of the longitudinal front edge of said table.

1.3. A machine-tool organization combining a tool-support; a frame-unit on which said tool-support is mounted; a table-support slidably connected with said frameunit to aiford a relative vertical movement therebetween, whereby its distance from said tool-support may be varied; a table mounted directly on said table'support; means comprising another frame-unit intervening between said table-support and said frame-unit and constructed to provide for movement in a horizontal direction between said table-support and said frame-unit; a feed-change mechanism mounted directly on said table-support in underlying relation with the path of feed of said table; a primemover mounted on one of said frame units; and a transmission extending from said prime-mover through said feed-change mechanism to said table to propel it at a rate determined by said feed-change mechanism; and means mounted adjacent said table for manually adjusting said feedchange mechanism.

14. A machine-tool of the nature disclosed combining a table-support mounted to be bodily moved vertically and in a horizontal plane; a feed-change box mounted at the front side thereof; an elongated table slidably mounted upon said movable table-support above said box; a feed-screw journaled on the under side of said table and reciprocating relatively to said box; mechanism housed by said box for propelling said table; and hand-operated means pivoted to the front side of said box near the longitudinal front edge of said table and adapted to elfable the operative capacity of saidmechanism to be manually determined.

15. A machine-tool organization combining a work-supporting member; a tool-supporting member; a frame; a first and a second series of gears; a hand-operated element mounted on said frame and provided with positionindicating means; imeans operativel-y connecting said element with the first and the second gear-series whereby a rotation of said element will efiect a shift of said first gear series, and whereby ansingle hand-operated element extending into said housing and provided externally thereof with a hand-wheel having a first and a second circumferential series of indicating characters; interpreting mechanism connecting said element with said speed-change mechanism, whereby a rotation of said hand-Wheel will effect a progressive change throughout one series of speed-changes, and whereby, when said element is shifted in position axially, a'rotation of said handwheel will effect progressive changes in another series of speed-changes and transmis-.

sion Lme'ans operatively connecting said speed-change mechanism in propelling relation with one of said members.

17 machine-tool organization combining a work-supporting member; a tool-supporting member; an element; a first part in axially splined relation with said element; a second part in circumferentially splined relation with said element; and means for determining the action of one of said members and controlled by said parts.

18. A machine-tool organization combining a work-supporting member; a tool-supporting member; a first series of gears; a part adapted to be progressively moved to shift said first series of gears to enable them to yield a series of speeds; a' second series of gears in serial relation with said first series; a device for shifting said second series to enable the same to yield different speeds; a hand-operated element connected both with said part and with said device whereby when rotated it will operate said device without operating said part, and when shifted axially it will operate said part without operating said device; and transmission means operatively connecting said series of gears in serial propelling relation with one of said members.

19. A machine-tool organization combining a work-supporting member; a tool-supporting member; a frame; mechanism for actuating one of said members; a handoperated element mounted onsaid frame and provided with position-indicating means; means operatively connecting said element with said mechanism whereby a rotation of said element will establish one operative relation between said mechanism and the element actuated thereby; and whereby another movement of said element will establish another operative relation between said mechanism and one of said elements; and transmission means enabling said mechanism to propel one of said members.

20. A machine-tool organization combining a Work-supporting member; a t00l-supporting member; a feed-change mechanism; a casing housing said mechanism; a"single hand-operated element located adjacent the 50 speed-change mechanism between the spinseries of speeds; a second series of gears in: ser al relation with said first series; a de' change mechanism in propelling relation with one of said members.

21. A machine-tool organization combining a work-supporting member; a tool-supporting member; a first series of gears; a part adapted to be progressively mo'vedtoshift said gears to enable them to yield a vice for shifting said second series to enable the same to yield difi'erent speeds, and

' a hand-operated. element connected both with said part and with said device whereby when moved in one .way it willoperate said device without operating said part, and when moved inanother Way: it Will operate said part without operating said device; and

. transmission means operatively connecting said series of gears in serial propelling relation with one of said members.

,} 22. A machine-tool organization combin ing a Work-supporting member; a tool-supporting member; a first series of gears;--.-a part. adapted to be progressively moved to shiftsaid first series of gears tovenable them to yield a series of 'speeds;'a second series of gears in serial relation with said first series 5. a device forv shifting said second series to enable the same to yield different speeds and a hand-operated element connected boti with .Isaid part and with said device. whereby when moved in one way it will operate said device without operating said part, and when moved in another wayit will operate said part without operating said device; and transmission means operatively connecting said series of gears in serial propelling relation with one of said members.

. A machine-tool organization combinmg a spindle; a table; a prime-mover; a

dle and the prime-mover; a'first transmission connecting said spindle and said prime mover through said speed-change mechanism; a feed-change mechanism adjacent the table and remote from the primemover; a 'motion-reverser between the feed change mechanism and said table; a second transmission adapted to connect said prime-mover, said feed-change mechanism;

said motion-reverser, and said table together in series in theorder recited; a hand-operated member located adjacent the table; and. shifting means actuated by said member for causing the table to feed at; the rate determined by said feed=change mechanism and in the direction indicated by the position of said hand-operated member and determined f by said motion-reverser."-

24. A machine-tool organization comblning a spindle; a table; a prime-mover;fya

speed-change mechanism between the spindle and the prime-mover; a first transmission connecting said spindle and said primem over through said. speed-change mechamsm; a feed-change mechanism adjacent the table and remote' from the primemover; a motion-reverser between the feed-change mechanism and said table; a second transmission adapted to connect said prime-mover, said feed-change; mechanism,

ated member located adjacent theftabl e; and shifting "means actuated by" said member both regulating the effect of both said feedsaid motion-reverser, and said table together in 8813168 in the order recited; a hand-operchange mechanism and said motion-'reverser,

1.25. A maghine-tool organization combinmg a Work-supporting member; "a tool-supporting member; a speed-change mechanism; a hand-operated element "shiftable into 'difierent positions and adapted to-be progressively mo ved from each of said positions; interpreting mechanism actuated by said element for causing said speed-change mechanism to yield one series of speeds when said elementismoyed from one of'its positions and to yield another series of speeds when said element is moved from another of its positions; and transmission means operatively connecting said speedchange mechanism in propelling relation with one of sai'd members.

In witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

SOL EINSTEIN.

il itnesses GEO. BERGMAN, WALTER VJ. TANGEMAN.

" .x vhereby'both'the direction and the rate-of "feed df' said table will be denoted by the position ofsaid hand-operated member. 

